Watch: Footage shows teen planning triple murder

Video footage of a teenager before and after he killed his mother, brother and sister has been released by police.

Nicholas Prosper, 18, admitted shooting dead Juliana Falcon, 48, Kyle Prosper, 16, and Giselle Prosper, 13, at their home in Luton in the early hours of 13 September 2024.

Footage played to Luton Crown Court showed him mimicking a shooting with a piece of wood months before the murders and his arrest in the street hours after.

He is also seen buying a gun from a man in car park the day before the shooting and repeatedly refusing to answer detectives' questions in custody.

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